Head lamp



Feb. 21 1933. SCHENSTED 1,898,143

HEAD LAMP Filed Dec. 15, 1931 3 Sheets-Sheet l 6 a Inventor Feb. 21,1933. RE. SCHENSTED HEAD LAMP 1951 5 Sheets-Sheet 3 Filed Dec.

T I n e V n I Patented Feb. 21, 1933 UNITED STATES ROY E. SCHENSTED, OFBESSEMER, MICHIGAN HEAD LAMP Application filed December 15, 1981. SerialNo. 581,211.

This invention relates to a headlamp the general object of the inventionbeing to provide a lamp provided with two reflectors which cooperatewith each other to produce light beams which are under control toeliminate glare and to utilize all the rays to illuminate the road.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a front view of the improved lamp.

Fig. 2 is a vertical sectional view through the lamp.

Fig. 3 is a section on line 3+3 of Fig. 2. Fig. 4 is a verticalsectional view on line 44 of Fig. 2.

Fig. 5 is a view of the upper reflector. Fig. 6 is a view of the devicewhich is to be attached to the lamp bulb.

In these drawings, the letter A indicates the lamp housing which ispreferably of the shape shown with the front sloping slightly downwardlyand rearwardly with an opening in the upper part thereof which is closedby the transparent member 1. A substantially elliptical reflector 2 islocated in the lower part of the housing and is removablyheld therein bybolts 3, the reflector facing upwardly and havin the socket 5 passingthrough its bottom and through the bottom of the housing, so that therays of light from the lamp bulb 6 are directed upwardly.

A substantially plate-like reflector 7 is arranged in the upper part ofthe housing and is attached at its front end to the top of the housingby the bolts 8 and the rear part of the reflector 7 is adjustablyconnected with the top of the housing by the long bolt 9 which passesthrough the top of the housing through a hole in the rear part of thereflector 7 and has a 3 spring 10 thereon which presses the rear part ofthe reflector against a nut 11 threadedon' the bolt. The nut can .beheld against turning movement by connecting it with the -re flector 7 inany suitable manner. Thus by turning the bolt, the reflector 7 can beadjust- 5 ed relative to the reflector 2to regulate the reflection ofthe rays of lightfrom the housing from the bulb 1. v

The reflector 7 is substantially straight from the rear end a to thepoint 5, and is 9 slightly curved from the point 6 to the point wherethe reflector is connected by the bolts 8 to the housing.

A plate 12 is supported onithe top of the bulb 6 by the frame 13 whichis clamped Q1 around the lower part of the bulb or the top of the socketby a screw 14. The object ofthis plate is to prevent the rays of lightfrom the bulb passing directly to the upper reflector. The housing canbe attached or supported in 79 any suitable manner. The drawing shows abracket 15 attached to the bottom of the housing and having a threadedstem 16 which is cgnnected to the supporting part by the nut 1 5.

The concaved reflector 2 is of substantially elliptical form to reflectthe rays of light up wardly in the form of an elongated beam of lightwhich is re-concentrated by the oblong slightly curved reflector 7 thusproducing a 39. beam of light, having atits superior level, a straightline of demarkation, with no rays of light extending across a givenline, and, if properly adjusted, said rays do not exceed in height thelight housing or lamp from which they are projected. Thus it will beseen that my invention includes the following features The use of tworeflectors in headlight construction each of which works harmoniouslywith the other, in combination and jointly contribute to produce lightbeams which are under control.

The control of light rays, projected from headlight wherein the superiorrays do not extend above a given straight line of demarkation. Theelimination of glare to motorist or pedestrian meeting car equipped withsaid headlight when headlight is so adjusted that the rays do not riseabove a horizontal plane passing through the lamp centers parallel tothe level road upon which the equipped car stands and not higher thansaid lamp centers.

Attention is called to the fact that the front of the elliptical bottomreflector is blunt, while the back of the same comes slightly but moreto a point.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall within the scope of the appended claim.

Having thus described my invention, What I claim as new is A lamp of theclass described comprising a casing, having its front sloping downwardlyand rearwardly, with a large substantially rectangular shaped opening inthe upper part of said front,-a transparent member in said opening avertically arranged concave substantially elliptical shaped reflectorarranged in the bottom of the casing for directing rays of lightupwardly, said reflector having upwardly bowed side edges with its rearend somewhat pointed and its front end blunt and located directly underthe lower end of the opening, a vertically arranged lamp bulb, carriedby the central part of the reflector, an elongated plate-like reflectorhaving its front end connected to the top of the casing at the frontthereof, said reflector extending downwardly and rearwardly to a pointadjacent the rear of the casing, and having its front part slightlycurved with its concavity facing downwardly, and the rear of thereflector being substantially straight, a bolt passing through the topof the casing and through the rear part of the plate like reflector, anut on the bolt engaging the under face of said plate like reflector,and a spring on the bolt having one end bearing against the top of thecasing and its lower end against the reflector.

In testimony whereof I affix my signature.

ROY E. SCHENSTED.

